Just my thoughts....I think it's okay to feel uncomfortable as long as it still feels safe(ie: it feels uncomfortable, but doesn't send you into a really bad place.) I can understand not wanting to make the therapist uncomfortable, but I try to remind myself that my therapist can handle whatever I tell him.

In terms of bringing up sexual topics, I have done so multiple times. Like you mentioned, I too was afraid I'd scare him away. I worried that if I told him something, he'd think I'm disgusting and decide he can't work with me anymore. I have told him things via voicemail and in person. On one hand, telling him over voicemail was nice because I didn't have to look at him, but waiting to talk about in session was stressful. Telling him in person felt healing. I took a chance and he proved that he is safe and won't judge me.

I know it's really hard and scary to share something so intimate. It's not easy to be vulnerable, but it can be healing in my experience. It's okay to take it slow and or email her. This is your therapy and you can decide what and how you share things.

Hang in there and I hope this helps!